1
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Maruyama M, Nishida Y, Tanaka H, Minami T, Ogawara KI, Miyake M, Takamura Y, Kakuta H, Higaki K. Analysis of absorption-enhancing mechanisms for combinatorial use of spermine with sodium taurocholate in Caco-2 cells. Eur J Pharm Biopharm 2022; 180:332-343. [DOI: 10.1016/j.ejpb.2022.10.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/03/2022] [Accepted: 10/19/2022] [Indexed: 11/25/2022]
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2
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The change of the electrophysiological parameters using human intestinal tissues from ulcerative colitis and Crohn’s disease. J Pharmacol Sci 2022; 150:90-93. [DOI: 10.1016/j.jphs.2022.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 07/22/2022] [Accepted: 07/26/2022] [Indexed: 11/24/2022] Open
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3
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Extensive improvement of oral bioavailability of mebendazole, a brick dust, by polymer-containing SNEDDS preparation: Disruption of high crystallinity by utilizing its counter ion. Eur J Pharm Biopharm 2022; 172:213-227. [DOI: 10.1016/j.ejpb.2022.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/31/2022] [Accepted: 02/02/2022] [Indexed: 11/24/2022]
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4
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Flynn J, Ryan A, Hudson SP. Synergistic antimicrobial interactions of nisin A with biopolymers and solubilising agents for oral drug delivery. Eur J Pharm Biopharm 2022; 171:29-38. [PMID: 34986413 DOI: 10.1016/j.ejpb.2021.12.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/17/2021] [Accepted: 12/22/2021] [Indexed: 01/15/2023]
Abstract
In order to develop bacteriocins, like the lantibiotic nisin A, into effective alternatives to existing antibiotics, their biophysical and physicochemical properties must first be assessed, from solubility, to susceptibility and absorption. It has been well established that formulation strategies at early drug development stages can be crucial for successful outcomes during preclinical and clinical phases of development, particularly for molecules with challenging physicochemical properties. This work elucidates the physicochemical challenges of nisin A in terms of its susceptibility to digestive enzymes like pepsin, pancreatin and proteinase K and its poor solubility at physiological pHs. Low solution concentrations, below the minimum inhibitory concentration against Staphylococcus aureus, were obtained in phosphate buffered saline (PBS, pH 7.4) and in fasted state simulated intestinal fluid (FaSSIF, pH 6.5), while higher solubilities at more acidic pH's such as in a KCl/HCl buffer (pH 2) and in fasted state simulated gastric fluid (FaSSGF, pH 1.6) are observed. Tween® 80 (0.01% v/v) significantly increased the solution concentration of nisin A in PBS (pH 7.4, 24 hr). Pancreatin doubled nisin A's solution concentration at pH 7.4 (PBS) but reduced its' inhibitory activity to ∼ 20%, and pepsin almost completely degraded nisin (after 24 hr), but retained activity at biologically relevant exposure times (∼ 15 min). Harnessing synergism between nisin A and either glycol chitosan or ε-poly lysine, combined with the solubilizing effect of Tween®, increased the antimicrobial activity of nisin A six fold in an in vitro oral administration model.
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Affiliation(s)
- James Flynn
- SSPC, the Science Foundation Ireland Research Centre for Pharmaceuticals, Department of Chemical Sciences, Bernal Institute, University of Limerick, Ireland
| | - Aoibhín Ryan
- SSPC, the Science Foundation Ireland Research Centre for Pharmaceuticals, Department of Chemical Sciences, Bernal Institute, University of Limerick, Ireland
| | - Sarah P Hudson
- SSPC, the Science Foundation Ireland Research Centre for Pharmaceuticals, Department of Chemical Sciences, Bernal Institute, University of Limerick, Ireland.
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5
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Schneider L, Liu J, Zhang C, Azoitei A, Meessen S, Zheng X, Cremer C, Gorzelanny C, Kempe-Gonzales S, Brunner C, Wezel F, Bolenz C, Gunes C, John A. The Role of Interleukin-1-Receptor-Antagonist in Bladder Cancer Cell Migration and Invasion. Int J Mol Sci 2021; 22:ijms22115875. [PMID: 34070905 PMCID: PMC8198563 DOI: 10.3390/ijms22115875] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/21/2021] [Accepted: 05/27/2021] [Indexed: 11/30/2022] Open
Abstract
Background: The interleukin-1-receptor antagonist IL1RA (encoded by the IL1RN gene) is a potent competitive antagonist to interleukin-1 (IL1) and thereby is mainly involved in the regulation of inflammation. Previous data indicated a role of IL1RA in muscle-invasive urothelial carcinoma of the bladder (UCB) as well as an IL1-dependent decrease in tissue barrier function, potentially contributing to cancer cell invasion. Objective: Based on these observations, here we investigated the potential roles of IL1RA, IL1A, and IL1B in bladder cancer cell invasion in vitro. Methods: Cell culture, real-time impedance sensing, invasion assays (Boyden chamber, pig bladder model), qPCR, Western blot, ELISA, gene overexpression. Results: We observed a loss of IL1RA expression in invasive, high-grade bladder cancer cell lines T24, UMUC-3, and HT1197 while IL1RA expression was readily detectable in the immortalized UROtsa cells, the non-invasive bladder cancer cell line RT4, and in benign patient urothelium. Thus, we modified the invasive human bladder cancer cell line T24 to ectopically express IL1RA, and measured changes in cell migration/invasion using the xCELLigence Real-Time-Cell-Analysis (RTCA) system and the Boyden chamber assay. The real-time observation data showed a significant decrease of cell migration and invasion in T24 cells overexpressing IL1RA (T24-IL1RA), compared to cells harboring an empty vector (T24-EV). Concurrently, tumor cytokines, e.g., IL1B, attenuated the vascular endothelial barrier, which resulted in a reduction of the Cell Index (CI), an impedance-based dimensionless unit. This reduction could be reverted by the simultaneous incubation with IL1RA. Moreover, we used an ex vivo porcine organ culture system to evaluate cell invasion capacity and showed that T24-IL1RA cells showed significantly less invasive capacity compared to parental T24 cells or T24-EV. Conclusions: Taken together, our results indicate an inverse correlation between IL1RA expression and tumor cell invasive capacity and migration, suggesting that IL1RA plays a role in bladder carcinogenesis, while the exact mechanisms by which IL1RA influences tumor cells migration/invasion remain to be clarified in future studies. Furthermore, we confirmed that real-time impedance sensing and the porcine ex vivo organ culture methods are powerful tools to discover differences in cancer cell migration and invasion.
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Affiliation(s)
- Lisa Schneider
- Department of Urology, Ulm University Hospital, 89081 Ulm, Germany; (L.S.); (J.L.); (C.Z.); (A.A.); (S.M.); (X.Z.); (C.C.); (F.W.); (C.B.); (A.J.)
| | - Junnan Liu
- Department of Urology, Ulm University Hospital, 89081 Ulm, Germany; (L.S.); (J.L.); (C.Z.); (A.A.); (S.M.); (X.Z.); (C.C.); (F.W.); (C.B.); (A.J.)
| | - Cheng Zhang
- Department of Urology, Ulm University Hospital, 89081 Ulm, Germany; (L.S.); (J.L.); (C.Z.); (A.A.); (S.M.); (X.Z.); (C.C.); (F.W.); (C.B.); (A.J.)
| | - Anca Azoitei
- Department of Urology, Ulm University Hospital, 89081 Ulm, Germany; (L.S.); (J.L.); (C.Z.); (A.A.); (S.M.); (X.Z.); (C.C.); (F.W.); (C.B.); (A.J.)
| | - Sabine Meessen
- Department of Urology, Ulm University Hospital, 89081 Ulm, Germany; (L.S.); (J.L.); (C.Z.); (A.A.); (S.M.); (X.Z.); (C.C.); (F.W.); (C.B.); (A.J.)
| | - Xi Zheng
- Department of Urology, Ulm University Hospital, 89081 Ulm, Germany; (L.S.); (J.L.); (C.Z.); (A.A.); (S.M.); (X.Z.); (C.C.); (F.W.); (C.B.); (A.J.)
| | - Catharina Cremer
- Department of Urology, Ulm University Hospital, 89081 Ulm, Germany; (L.S.); (J.L.); (C.Z.); (A.A.); (S.M.); (X.Z.); (C.C.); (F.W.); (C.B.); (A.J.)
| | | | - Sybille Kempe-Gonzales
- Department of Otorhinolaryngology, Head and Neck Surgery, Ulm University Hospital, 89075 Ulm, Germany; (S.K.-G.); (C.B.)
| | - Cornelia Brunner
- Department of Otorhinolaryngology, Head and Neck Surgery, Ulm University Hospital, 89075 Ulm, Germany; (S.K.-G.); (C.B.)
| | - Felix Wezel
- Department of Urology, Ulm University Hospital, 89081 Ulm, Germany; (L.S.); (J.L.); (C.Z.); (A.A.); (S.M.); (X.Z.); (C.C.); (F.W.); (C.B.); (A.J.)
| | - Christian Bolenz
- Department of Urology, Ulm University Hospital, 89081 Ulm, Germany; (L.S.); (J.L.); (C.Z.); (A.A.); (S.M.); (X.Z.); (C.C.); (F.W.); (C.B.); (A.J.)
| | - Cagatay Gunes
- Department of Urology, Ulm University Hospital, 89081 Ulm, Germany; (L.S.); (J.L.); (C.Z.); (A.A.); (S.M.); (X.Z.); (C.C.); (F.W.); (C.B.); (A.J.)
- Correspondence: ; Tel.: +49-731-500-58019
| | - Axel John
- Department of Urology, Ulm University Hospital, 89081 Ulm, Germany; (L.S.); (J.L.); (C.Z.); (A.A.); (S.M.); (X.Z.); (C.C.); (F.W.); (C.B.); (A.J.)
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6
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Okawa S, Sumimoto Y, Masuda K, Ogawara KI, Maruyama M, Higaki K. Improvement of lipid solubility and oral bioavailability of a poorly water- and poorly lipid-soluble drug, rebamipide, by utilizing its counter ion and SNEDDS preparation. Eur J Pharm Sci 2021; 159:105721. [PMID: 33482317 DOI: 10.1016/j.ejps.2021.105721] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 11/15/2020] [Accepted: 01/12/2021] [Indexed: 11/15/2022]
Abstract
Among drugs in development and/or in market, there are poorly water-soluble and poorly lipid-soluble compounds. Rebamipide, classified into BCS class IV, is one of those drugs which provide very low bioavailability and/or the difficulty of formulation for oral administration. Because of its low solubility in available lipoidal excipients, it was impossible to prepare an adequate SNEDDS formulation of rebamipide. Then, we tried to increase the solubility of rebamipide in lipoidal excipients for preparing a more practical SNEDDS formulation by making the complex with its counter ion, tetrabutylphosphonium hydroxide (TBPOH) or NaOH. Rebamipide concentration in ethanol was proportionally increased with the increment of TBPOH or NaOH added, indicating that the formation of complex with a counter ion should contribute to the solubilization of rebamipide in ethanol. Both Rebamipide-TBPOH complex (Reb-TBPOH) and Rebamipide-NaOH complex (Reb-NaOH) obtained by lyophilization showed no endothermic peak in DSC and no diffraction peak in XRPD, suggesting that the solid state of both complexes should be amorphous. Reb-TBPOH maintained the dissolution of rebamipide in SNEDDS vehicle (Capryol 90:Cremophor EL:Transcutol P = 4:3:3) at 20 mg/g at least for 28 days, while Reb-NaOH did it at 10 mg/g. In vitro dissolution study showed that Reb-TBPOH SNEDDS and Reb-NaOH SNEDDS containing rebamipide at 10 mg/g maintained the complete dissolution of rebamipide in FaSSIF (intestinal luminal condition). In the gastric luminal condition (pH3.9 acetate buffer), the high concentration, close to the complete dissolution, was transiently observed and quickly decreased to one-sixth of the maximum, but it was still around 70 times higher than that of the crystalline powder. The additional utilization of Eudragit EPO for SNEDDS preparations of both complexes successfully maintained the high concentrations of rebamipide in the gastric luminal condition. In vivo oral absorption studies clearly indicated that SNEDDS preparations utilizing Reb-counter ion complex successfully improved rebamipide absorption.
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Affiliation(s)
- Shinya Okawa
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan; Manufacturing Process Development Department, Otsuka Pharmaceutical Co., Ltd., 224-18 Ebino, Hiraishi, Kawauchi-cho, Tokushima 771-0182, Japan
| | - Yusuke Sumimoto
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Kazufumi Masuda
- Department of Physical Chemistry, Graduate School of Clinical Pharmacy, Shujitsu University, 1-6-1 Nishigawara, Naka-ku, Okayama 703-8516, Japan
| | - Ken-Ichi Ogawara
- Laboratory of Pharmaceutics, Kobe Pharmaceutical University, 4-19-1, Motoyamakita, Higashinada-ku, Kobe, Hyogo 658-8558, Japan
| | - Masato Maruyama
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Kazutaka Higaki
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan.
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7
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Kabedev A, Hossain S, Hubert M, Larsson P, Bergström CAS. Molecular Dynamics Simulations Reveal Membrane Interactions for Poorly Water-Soluble Drugs: Impact of Bile Solubilization and Drug Aggregation. J Pharm Sci 2020; 110:176-185. [PMID: 33152373 DOI: 10.1016/j.xphs.2020.10.061] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 10/14/2020] [Accepted: 10/28/2020] [Indexed: 01/19/2023]
Abstract
Molecular transport mechanisms of poorly soluble hydrophobic drug compounds to lipid membranes were investigated using molecular dynamics (MD) simulations. The model compound danazol was used to investigate the mechanism(s) by which bile micelles delivered it to the membrane. The interactions between lipid membrane and pure drug aggregates-in the form of amorphous aggregates and nanocrystals-were also studied. Our simulations indicate that bile micelles formed in the intestinal fluid may facilitate danazol incorporation into cellular membranes through two different mechanisms. The micelle may be acting as: i) a shuttle that presents the danazol directly to the membrane or ii) an elevator that moves the solubilized danazol with it as the colloidal structure itself becomes incorporated and solubilized within the membrane. The elevator hypothesis was supported by complementary lipid monolayer adsorption experiments. In these experiments, colloidal structures formed with simulated intestinal fluid were observed to rapidly incorporate into the monolayer. Simulations of membrane interaction with drug aggregates showed that both the amorphous aggregates and crystalline nanostructures incorporated into the membrane. However, the amorphous aggregates solubilized more quickly than the nanocrystals into the membrane, thereby improving the danazol absorption.
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Affiliation(s)
- Aleksei Kabedev
- Department of Pharmacy, Uppsala University, Husargatan 3, 751 23 Uppsala, Sweden
| | - Shakhawath Hossain
- Department of Pharmacy, Uppsala University, Husargatan 3, 751 23 Uppsala, Sweden
| | - Madlen Hubert
- Department of Pharmacy, Uppsala University, Husargatan 3, 751 23 Uppsala, Sweden
| | - Per Larsson
- Department of Pharmacy, Uppsala University, Husargatan 3, 751 23 Uppsala, Sweden; The Swedish Drug Delivery Center (SweDeliver), Uppsala University, Husargatan 3, 751 23 Uppsala, Sweden
| | - Christel A S Bergström
- Department of Pharmacy, Uppsala University, Husargatan 3, 751 23 Uppsala, Sweden; The Swedish Drug Delivery Center (SweDeliver), Uppsala University, Husargatan 3, 751 23 Uppsala, Sweden.
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8
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Markovic M, Zur M, Dahan A, Cvijić S. Biopharmaceutical characterization of rebamipide: The role of mucus binding in regional-dependent intestinal permeability. Eur J Pharm Sci 2020; 152:105440. [PMID: 32615260 DOI: 10.1016/j.ejps.2020.105440] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 05/21/2020] [Accepted: 06/29/2020] [Indexed: 01/01/2023]
Abstract
In this study, we aimed to elucidate biopharmaceutical characteristics of the anti-ulcer drug rebamipide, with special emphasis on the influence of gastrointestinal (GI) mucus on rebamipide segmental-dependent permeability and absorption. Experimental studies and physiologically-based pharmacokinetic (GastroPlusTM) simulations were used to elucidate segmental-dependent absorption and pharmacokinetic (PK) profile, accounting for various drug properties, including solubility/dissolution limitations, regional-dependent drug affinity to mucus and membrane permeability, as well as physiological factors such as regional-pH differences along the intestine, thickness and types of mucus, transit time and surface areas. Low permeability and extensive binding to GI mucus were the key modeling features, and accounting for these resulted in good fitting between the predicted and in-vivo PK profiles, validating the ability of the model to pinpoint the underlying mechanisms of rebamipide limited oral bioavailability. Furthermore, the simulations indicated regional-dependent intestinal permeability of rebamipide, with absorption rank order of jejunum>ileum>duodenum>colon, mainly attributable to segmental mucus differences. Food effect simulations indicated somewhat decreased rebamipide absorption in the fed state, in corroboration with previous reports. Since this anti-ulcer drug is currently examined for additional indications, this work provides important input for future development of rebamipide.
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Affiliation(s)
- Milica Markovic
- Department of Clinical Pharmacology, School of Pharmacy, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Moran Zur
- Department of Clinical Pharmacology, School of Pharmacy, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Arik Dahan
- Department of Clinical Pharmacology, School of Pharmacy, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel.
| | - Sandra Cvijić
- Department of Pharmaceutical Technology and Cosmetology, University of Belgrade-Faculty of Pharmacy, Vojvode Stepe 450, Belgrade 11221, Serbia
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9
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Sigfridsson K, Arvidsson T, Xue A, Wagner DJ, Pop-Damkov P, Zhang G, Strimfors M. A candidate drug administered subcutaneously to rodents as drug particles showing hepatic recirculation which influenced the sustained release process. Int J Pharm 2020; 581:119252. [PMID: 32240808 DOI: 10.1016/j.ijpharm.2020.119252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 03/19/2020] [Accepted: 03/20/2020] [Indexed: 11/16/2022]
Abstract
The aim of the present study was to evaluate and interpret the pharmacokinetic profiles after subcutaneous (s.c.) administration of crystalline AZ'72 nano- and microsuspensions to rodents. Both formulations were injected at 1.5 and 150 mg/kg to rats. For the lower dose, the profiles were similar after s.c. injection but extended as compared to oral administration. The overall exposure was higher for nanoparticles compared with microparticles during the investigated period. For the higher dose, injection of both suspensions resulted in maintained plateaus caused by the drug depots but, unexpectedly, at similar exposure levels. After addition of a further stabilizer, pluronic F127, nanosuspensions showed improved exposure with dose and higher exposure compared to larger particles in mice. Obviously, a stabilizer mixture that suits one delivery route is not necessarily optimal for another one. The differences in peak concentration (Cmax) between nano- and microparticles were mainly ascribed to differences in dissolution rate. Plasma profiles in mice showed curves with secondary absorption peaks after intravenous and oral administration, suggesting hepatic recirculation following both administration routes. This process, together with the depot formulation, complicates the analysis of absorption from s.c. administration, i.e. multiple processes were driving the plasma profile of AZ'72.
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Affiliation(s)
- Kalle Sigfridsson
- Advanced Drug Delivery, Pharmaceutical Sciences, R&D, AstraZeneca, Gothenburg, Sweden.
| | - Torbjörn Arvidsson
- Early Product Development, Pharmaceutical Sciences, R&D, AstraZeneca, Gothenburg, Sweden
| | - Aixiang Xue
- Animal Sciences and Technologies, Clinical Pharmacology and Safety Sciences, R&D, AstraZeneca, Boston, USA
| | - David J Wagner
- DMPK, Research and Early Development, Oncology R&D, AstraZeneca, Boston, USA
| | - Petar Pop-Damkov
- DMPK, Research and Early Development, Oncology R&D, AstraZeneca, Boston, USA
| | - Guangnong Zhang
- DMPK, Research and Early Development, Oncology R&D, AstraZeneca, Boston, USA
| | - Marie Strimfors
- Bioscience Metabolism, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
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Bannigan P, Flynn J, Hudson SP. The impact of endogenous gastrointestinal molecules on the dissolution and precipitation of orally delivered hydrophobic APIs. Expert Opin Drug Deliv 2020; 17:677-688. [DOI: 10.1080/17425247.2020.1743677] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Pauric Bannigan
- Department of Chemical Sciences, SSPC the SFI Pharmaceutical Centre, Bernal Institute, University of Limerick, Limerick, Ireland
| | - James Flynn
- Department of Chemical Sciences, SSPC the SFI Pharmaceutical Centre, Bernal Institute, University of Limerick, Limerick, Ireland
| | - Sarah P. Hudson
- Department of Chemical Sciences, SSPC the SFI Pharmaceutical Centre, Bernal Institute, University of Limerick, Limerick, Ireland
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Natalini P, Razuc M, Sørli J, Bucalá V, Ramírez-Rigo M. The influence of surfactant on the properties of albendazole-bile salts particles designed for lung delivery. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.101162] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Wang J, Wang L, Li Y, Wang X, Tu P. Apically targeted oral micelles exhibit highly efficient intestinal uptake and oral absorption. Int J Nanomedicine 2018; 13:7997-8012. [PMID: 30538473 PMCID: PMC6263247 DOI: 10.2147/ijn.s183796] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Introduction Polymeric micelles (PMs) hold promise for improving solubility and oral absorption of poorly soluble drugs. Unfortunately, the oral absorption of PMs is also limited by intestinal epithelium. To improve the oral delivery efficiency of micelles, transporter-mediated micelles could enhance the transport efficiency across the epithelial barrier, and they have attracted more attention. Methods Peptide transporter 1 (PepT1)-mediated micelles (Val-PMs/Phe-PMs) were designed by grafting valine (or phenylalanine) onto the surface of curcumin (Cur)-loaded-D-α-tocopheryl polyethylene glycol 1000 succinate micelles (TP-PMs). The oral absorption mechanism and oral bioavailability were further investigated in vitro and in vivo. Results The cellular study showed that Val-PMs/Phe-PMs had a high PepT1 affinity, resulting in a higher drug uptake and transcellular transport than TP-PMs. In rats, Val-PMs/Phe-PMs exhibited higher intestinal accumulation in the apical side of the intestinal epithelium than TP-PMs, promoting drug diffusion across epithelial barrier. The oral bioavailability of Cur was significantly improved by Val-PMs/Phe-PMs, which was about 10.50- and 3.40-fold greater than that of Cur-Sol and TP-PMs, respectively. Conclusion PepT-1-mediated micelles, using PepT1 as a target on intestinal epithelium, have unique functions with intestine and prove promising for oral delivery of poorly water-soluble drugs.
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Affiliation(s)
- Jinling Wang
- School of Chinese Materia Medica, Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, China,
| | - Lifang Wang
- School of Chinese Materia Medica, Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, China,
| | - Ying Li
- School of Chinese Materia Medica, Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, China,
| | - Xiaohui Wang
- School of Chinese Materia Medica, Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, China,
| | - Pengfei Tu
- School of Chinese Materia Medica, Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, China,
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Enright EF, Govindarajan K, Darrer R, MacSharry J, Joyce SA, Gahan CGM. Gut Microbiota-Mediated Bile Acid Transformations Alter the Cellular Response to Multidrug Resistant Transporter Substrates in Vitro: Focus on P-glycoprotein. Mol Pharm 2018; 15:5711-5727. [PMID: 30388019 DOI: 10.1021/acs.molpharmaceut.8b00875] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Pharmacokinetic research at the host-microbe interface has been primarily directed toward effects on drug metabolism, with fewer investigations considering the absorption process. We previously demonstrated that the transcriptional expression of genes encoding intestinal transporters involved in lipid translocation are altered in germ-free and conventionalized mice possessing distinct bile acid signatures. It was consequently hypothesized that microbial bile acid metabolism, which is the deconjugation and dehydroxylation of the bile acid steroid nucleus by gut bacteria, may impact upon drug transporter expression and/or activity and potentially alter drug disposition. Using a panel of three human intestinal cell lines (Caco-2, T84, and HT-29) that differ in basal transporter expression level, bile acid conjugation-, and hydroxylation-status was shown to influence the transcription of genes encoding several major influx and efflux transporter proteins. We further investigated if these effects on transporter mRNA would translate to altered drug disposition and activity. The results demonstrated that the conjugation and hydroxylation status of the bile acid steroid nucleus can influence the cellular response to multidrug resistance (MDR) substrates, a finding that did not directly correlate with directionality of gene or protein expression. In particular, we noted that the cytotoxicity of cyclosporine A was significantly augmented in the presence of the unconjugated bile acids deoxycholic acid (DCA) and chenodeoxycholic acid (CDCA) in P-gp positive cell lines, as compared to their taurine/glycine-conjugated counterparts, implicating P-gp in the molecular response. Overall this work identifies a novel mechanism by which gut microbial metabolites may influence drug accumulation and suggests a potential role for the microbial bile acid-deconjugating enzyme bile salt hydrolase (BSH) in ameliorating multidrug resistance through the generation of bile acid species with the capacity to access and inhibit P-gp ATPase. The physicochemical property of nonionization is suggested to underpin the preferential ability of unconjugated bile acids to attenuate the efflux of P-gp substrates and to sensitize tumorigenic cells to cytotoxic therapeutics in vitro. This work provides new impetus to investigate whether perturbation of the gut microbiota, and thereby the bile acid component of the intestinal metabolome, could alter drug pharmacokinetics in vivo. These findings may additionally contribute to the development of less toxic P-gp modulators, which could overcome MDR.
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Affiliation(s)
- Elaine F Enright
- School of Pharmacy , ‡APC Microbiome Ireland , §School of Biochemistry and Cell Biology , ∥School of Microbiology , ⊥School of Medicine , University College Cork , Cork , Ireland
| | | | | | | | | | - Cormac G M Gahan
- School of Pharmacy , ‡APC Microbiome Ireland , §School of Biochemistry and Cell Biology , ∥School of Microbiology , ⊥School of Medicine , University College Cork , Cork , Ireland
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14
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Sigfridsson K, Nilsson L, Ahlqvist M, Andersson T, Granath AK. Preformulation investigation and challenges; salt formation, salt disproportionation and hepatic recirculation. Eur J Pharm Sci 2017; 104:262-272. [PMID: 28366653 DOI: 10.1016/j.ejps.2017.03.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 03/08/2017] [Accepted: 03/29/2017] [Indexed: 11/15/2022]
Abstract
A compound, which is a selective peroxisome proliferator activated receptor (PPAR) agonist, was investigated. The aim of the presented studies was to evaluate the potential of the further development of the compound. Fundamental physicochemical properties and stability of the compound were characterized in solution by liquid chromatography and NMR and in solid-state by various techniques. The drug itself is a lipophilic acid with tendency to form aggregates in solution. The neutral form was only obtained in amorphous form with a glass-transition temperature of approximately 0°C. The intrinsic solubility at room temperature was determined to 0.03mg/mL. Chemical stability studies of the compound in aqueous solutions showed good stability for at least two weeks at room temperature, except at pH1, where a slight degradation was already observed after one day. The chemical stability in the amorphous solid-state was investigated during a period of three months. At 25°C/60% relative humidity (RH) and 40°C/75% RH no significant degradation was observed. At 80°C, however, some degradation was observed after four weeks and approximately 3% after three months. In an accelerated photostability study, degradation of approximately 4% was observed. Attempts to identify a crystalline form of the neutral compound were unsuccessful, however, salt formation with tert-butylamine, resulted in crystalline material. Results from stability tests of the presented crystalline salt form indicated improved chemical stability at conditions whereas the amorphous neutral form degraded. However, the salt form of the drug dissociated under certain conditions. The drug was administered both per oral and intravenously, as amorphous nanoparticles, to conscious dogs. Plasma profiles showed curves with secondary absorption peaks, indicating hepatic recirculation following both administration routes. A similar behavior was observed in rats after oral administration of a pH-adjusted solution. The observed double peaks in plasma exposure and the dissociation tendency of the salt form, were properties that contributed to make further development of the candidate drug challenging. Options for development of solid dosage forms of both amorphous and crystalline material of the compound are discussed.
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Affiliation(s)
| | - Lena Nilsson
- AstraZeneca R&D Gothenburg, S-431 83 Mölndal, Sweden
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15
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Zhang H, Huang X, Zhang Y, Gao Y. Efficacy, safety and mechanism of HP-β-CD-PEI polymers as absorption enhancers on the intestinal absorption of poorly absorbable drugs in rats. Drug Dev Ind Pharm 2016; 43:474-482. [DOI: 10.1080/03639045.2016.1264412] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Hailong Zhang
- Department of Pharmacy, School of Pharmacy, Xi’an Jiaotong University, Xi’an, China
| | - Xiaoyan Huang
- Department of Pharmacy, School of Pharmacy, Xi’an Jiaotong University, Xi’an, China
| | - Yongjing Zhang
- Department of Pharmacy, School of Pharmacy, Xi’an Jiaotong University, Xi’an, China
| | - Yang Gao
- Department of Pharmacy, School of Pharmacy, Xi’an Jiaotong University, Xi’an, China
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16
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Dubray O, Jannin V, Demarne F, Pellequer Y, Lamprecht A, Béduneau A. In-vitro investigation regarding the effects of Gelucire ® 44/14 and Labrasol® ALF on the secretory intestinal transport of P-gp substrates. Int J Pharm 2016; 515:293-299. [PMID: 27720954 DOI: 10.1016/j.ijpharm.2016.10.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 09/29/2016] [Accepted: 10/05/2016] [Indexed: 10/20/2022]
Abstract
In this present study, the secretory transport of P-gp substrates, rhodamine 123 and digoxin, was evaluated using a Caco-2/HT29-MTX co-culture characterized by an efflux mechanism and a paracellular permeability closer to the human intestinal barrier compared to the Caco-2 monolayer gold standard. The influence of simulated intestinal fluids termed FeSSIF and FaSSIF on the intestinal absorption was also assessed in comparison with a conventional saline buffer. Labrasol® ALF and Gelucire® 44/14 in saline buffer significantly decreased to 83% and 62%, the P-gp-mediated transport of rhodamine 123 across the co-culture, respectively. The effects of Gelucire® 44/14 were much more exacerbated with the Caco-2 monolayer model with a reduced permeability to 34% but they were partially reversed in the co-culture with FeSSIF. The modulation by the lipid excipients of digoxin secretory transport across the Caco-2 monolayer and the co-culture was reduced compared with the rhodamine 123. This work also emphasizes the numerous parameters that have to be considered for predicting accurately the effects of potential P-gp inhibitors including the in-vitro model, the incubation media and the intrinsic properties of P-gp substrates.
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Affiliation(s)
- Océane Dubray
- FDE EA4267, Univ. Bourgogne Franche-Comté, F-25000, Besançon, France
| | - Vincent Jannin
- Gattefossé SAS, 36 chemin de Genas, 69804, Saint-Priest cedex, France
| | - Fréderic Demarne
- Gattefossé SAS, 36 chemin de Genas, 69804, Saint-Priest cedex, France
| | - Yann Pellequer
- FDE EA4267, Univ. Bourgogne Franche-Comté, F-25000, Besançon, France
| | - Alf Lamprecht
- FDE EA4267, Univ. Bourgogne Franche-Comté, F-25000, Besançon, France; Department of Pharmaceutics, Institute of Pharmacy, University of Bonn, Germany
| | - Arnaud Béduneau
- FDE EA4267, Univ. Bourgogne Franche-Comté, F-25000, Besançon, France.
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17
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Interaction between dietary bioactive peptides of short length and bile salts in submicellar or micellar state. Food Chem 2016; 209:114-22. [DOI: 10.1016/j.foodchem.2016.04.047] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 03/17/2016] [Accepted: 04/13/2016] [Indexed: 11/30/2022]
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18
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Moghimipour E, Tabassi SAS, Ramezani M, Handali S, Löbenberg R. Brush border membrane vesicle and Caco-2 cell line: Two experimental models for evaluation of absorption enhancing effects of saponins, bile salts, and some synthetic surfactants. J Adv Pharm Technol Res 2016; 7:75-9. [PMID: 27429925 PMCID: PMC4932809 DOI: 10.4103/2231-4040.184588] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
The aim of this study was to investigate the influence of absorption enhancers in the uptake of hydrophilic compounds. The permeation of the two hydrophilic drug models gentamicin and 5 (6)-carboxyfluorescein (CF) across the brush border membrane vesicles and Caco-2 cell lines were evaluated using total saponins of Acanthophyllum squarrosum, Quillaja saponaria, sodium lauryl sulfate, sodium glycocholate, sodium taurodeoxycholate, and Tween 20 as absorption enhancers. Transepithelial electrical resistance (TEER) measurement was utilized to assess the paracellular permeability of cell lines. Confocal laser scanning microscopy (CLSM) was performed to obtain images of the distribution of CF in Caco-2 cells. These compounds were able to loosen tight junctions, thus increasing paracellular permeability. CLSM confirmed the effect of these absorption enhancers on CF transport across Caco-2 lines and increased the Caco-2 permeability via transcellular route. It was also confirmed that the decrease in TEER was transient and reversible after removal of permeation enhancers.
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Affiliation(s)
- Eskandar Moghimipour
- Nanotechnology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | | | - Mohammad Ramezani
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Somayeh Handali
- Nanotechnology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Raimar Löbenberg
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
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19
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Antoine D, Pellequer Y, Tempesta C, Lorscheidt S, Kettel B, Tamaddon L, Jannin V, Demarne F, Lamprecht A, Béduneau A. Biorelevant media resistant co-culture model mimicking permeability of human intestine. Int J Pharm 2015; 481:27-36. [PMID: 25601199 DOI: 10.1016/j.ijpharm.2015.01.028] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 01/13/2015] [Accepted: 01/15/2015] [Indexed: 11/29/2022]
Abstract
Cell culture models are currently used to predict absorption pattern of new compounds and formulations in the human gastro-intestinal tract (GIT). One major drawback is the lack of relevant apical incubation fluids allowing mimicking luminal conditions in the GIT. Here, we suggest a culture model compatible with biorelevant media, namely Fasted State Simulated Intestinal Fluid (FaSSIF) and Fed State Simulated Intestinal Fluid (FeSSIF). Co-culture was set up from Caco-2 and mucus-secreting HT29-MTX cells using an original seeding procedure. Viability and cytotoxicity assays were performed following incubation of FeSSIF and FaSSIF with co-culture. Influence of biorelevant fluids on paracellular permeability or transporter proteins were also evaluated. Results were compared with Caco-2 and HT29-MTX monocultures. While Caco-2 viability was strongly affected with FeSSIF, no toxic effect was detected for the co-cultures in terms of viability and lactate dehydrogenase release. The addition of FeSSIF to the basolateral compartment of the co-culture induced cytotoxic effects which suggested the apical mucus barrier being cell protective. In contrast to FeSSIF, FaSSIF induced a slight increase of the paracellular transport and both tested media inhibited partially the P-gp-mediated efflux in the co-culture. Additionally, the absorptive transport of propranolol hydrochloride, a lipophilic β-blocker, was strongly affected by biorelevant fluids. This study demonstrated the compatibility of the Caco-2/HT29-MTX model with some of the current biorelevant media. Combining biorelevant intestinal fluids with features such as mucus secretion, adjustable paracellular and P-gp mediated transports, is a step forward to more realistic in-vitro models of the human intestine.
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Affiliation(s)
- Delphine Antoine
- EA 4267 Fonctions et Dysfonctions Epitheliales, University of Franche-Comté, Besançon, France
| | - Yann Pellequer
- EA 4267 Fonctions et Dysfonctions Epitheliales, University of Franche-Comté, Besançon, France
| | - Camille Tempesta
- EA 4267 Fonctions et Dysfonctions Epitheliales, University of Franche-Comté, Besançon, France
| | - Stefan Lorscheidt
- Laboratory of Pharmaceutical Technology and Biopharmaceutics, University of Bonn, Germany
| | - Bernadette Kettel
- Laboratory of Pharmaceutical Technology and Biopharmaceutics, University of Bonn, Germany
| | - Lana Tamaddon
- EA 4267 Fonctions et Dysfonctions Epitheliales, University of Franche-Comté, Besançon, France
| | - Vincent Jannin
- Gattefossé SAS, 36 chemin de Genas, 69804 Saint-Priest Cedex, France
| | - Frédéric Demarne
- Gattefossé SAS, 36 chemin de Genas, 69804 Saint-Priest Cedex, France
| | - Alf Lamprecht
- EA 4267 Fonctions et Dysfonctions Epitheliales, University of Franche-Comté, Besançon, France; Laboratory of Pharmaceutical Technology and Biopharmaceutics, University of Bonn, Germany
| | - Arnaud Béduneau
- EA 4267 Fonctions et Dysfonctions Epitheliales, University of Franche-Comté, Besançon, France.
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20
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Stojančević M, Pavlović N, Goločorbin-Kon S, Mikov M. Application of bile acids in drug formulation and delivery. FRONTIERS IN LIFE SCIENCE 2014. [DOI: 10.1080/21553769.2013.879925] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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21
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Jarmołowska B, Teodorowicz M, Fiedorowicz E, Sienkiewicz-Szłapka E, Matysiewicz M, Kostyra E. Glucose and calcium ions may modulate the efficiency of bovine β-casomorphin-7 permeability through a monolayer of Caco-2 cells. Peptides 2013; 49:59-67. [PMID: 24004919 DOI: 10.1016/j.peptides.2013.08.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 08/20/2013] [Accepted: 08/20/2013] [Indexed: 12/23/2022]
Abstract
Milk and dairy products provide a lot of valuable nutritive elements. They are also sources of biologically active peptides, including β-casomorphins that manifest the properties of morphine. An activity of DPPIV seems to be most crucial factor decreasing the efficiency of the β-casomorphin-7 (BCM7) transport. The increase of BCM7 concentration in blood may intensify symptoms of apparent life threatening events (ALTE), autism, schizophrenia, and allergy. This study aimed at identifying the influence of several selected substances on a transport efficiency of bovine BCM7 through an intestinal monolayer in a Caco-2 cell model system. Applying the ELISA method, the permeability coefficient of BCM7 through the Caco-2 monolayer was calculated. TEER values were used to evaluate the integrity of Caco-2 cell monolayers. An increase of glucose and Ca(2+) concentrations in the culture medium was accompanied by an increase of the BCM7 transport efficiency. The lowest permeability coefficients of BCM7 were observed for the membranes with high electrical resistances. The transport was enhanced in the presence of milk infant formulas, whereas no changes were observed when using μ-opioid receptor antagonist (casoxin-6). The results may be useful in understanding the pathogenesis of inflammation and food allergy in infants.
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Affiliation(s)
- Beata Jarmołowska
- Department of Biochemistry, Faculty of Biology & Biotechnology, University of Warmia and Mazury, ul. Oczapowskiego 1A, 10-719 Olsztyn, Poland
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22
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Miyake M. Improvement and Prediction of Intestinal Drug Absorption. YAKUGAKU ZASSHI 2013; 133:995-1006. [DOI: 10.1248/yakushi.13-00172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Masateru Miyake
- Bioavailability Research Project, Formulation Research Institute, Otsuka Pharmaceutical Co., Ltd
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23
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Lodemann U, Einspanier R, Scharfen F, Martens H, Bondzio A. Effects of zinc on epithelial barrier properties and viability in a human and a porcine intestinal cell culture model. Toxicol In Vitro 2012; 27:834-43. [PMID: 23274768 DOI: 10.1016/j.tiv.2012.12.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 12/14/2012] [Accepted: 12/19/2012] [Indexed: 01/01/2023]
Abstract
Zinc is an essential trace element with a variety of physiological and biochemical functions. Piglets are commonly supplemented, during the weaning period, with doses of zinc above dietary requirements with positive effects on health and performance that might be attributed to anti-secretory and barrier-enhancing effects in the intestine. For a better understanding of these observations increasing zinc sulfate (ZnSO4; 0-200μM) concentrations were used in an in vitro culture model of porcine (IPEC-J2) and human (Caco-2) intestinal epithelial cells and effects on barrier function, viability, and the mRNA expression of one selected heat shock protein (Hsp) were assessed. When treated apically with zinc sulfate, the transepithelial electrical resistance (TEER) did not change significantly. In contrast, cell viability measured by lactate dehydrogenase (LDH) leakage, by ATP and by WST-1 conversion in postconfluent IPEC-J2 monolayers was affected after a 24-h treatment with 200μM ZnSO4. Caco-2 cells were more resistant to Zn. ZnSO4 did not induce any effect on viability, except when it was used at the highest concentration (200μM), and only in preconfluent cells. Furthermore, ZnSO4 induced Hsp70 mRNA expression at 200μM and was more pronounced in preconfluent cells. The observed dose-related effects of zinc are cell-line specific and depended on the differentiation status of the cells. The IPEC-J2 cell line appears to be a suitable in vitro model to characterize specific effects on porcine intestinal cells.
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Affiliation(s)
- U Lodemann
- Institute of Veterinary Physiology, Department of Veterinary Medicine, Freie Universität Berlin, Oertzenweg 19b, 14163 Berlin, Germany.
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24
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Ujhelyi Z, Fenyvesi F, Váradi J, Fehér P, Kiss T, Veszelka S, Deli M, Vecsernyés M, Bácskay I. Evaluation of cytotoxicity of surfactants used in self-micro emulsifying drug delivery systems and their effects on paracellular transport in Caco-2 cell monolayer. Eur J Pharm Sci 2012; 47:564-73. [PMID: 22841998 DOI: 10.1016/j.ejps.2012.07.005] [Citation(s) in RCA: 126] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Revised: 07/05/2012] [Accepted: 07/05/2012] [Indexed: 10/28/2022]
Abstract
The objective of this study was to examine the cellular effects of the members of two non-ionic amphiphilic tenside groups and their mixtures on human Caco-2 cell monolayers as dependent upon their chemical structures and physicochemical properties. The first group of polyethylene glycol esters is represented by Polysorbates and Labrasol alone and in blends, while the members of the second group. Capryol 90, Capryol PGMC, Lauroglycol 90 and Lauroglycol FCC were used as propylene glycol esters. They are increasingly used in SMEDDS as recent tensides or co-tensides to increase hydrophobic bioavailability of a drug. Critical micelle concentration was measured by determination of surface tension. CMC refers to the ability of solubilization of surfactants. Cytotoxicity tests were performed on Caco-2 cell monolayers by MTT and LDH methods. Paracellular permeability as a marker of the integrity of cell monolayers, was examined with Lucifer yellow assays combined with TransEpithelial Electrical Resistance (TEER) measurements. The effect of these surfactants on tight junctions as evidence for paracellular pathway was also characterized. The results of cytotoxicity assays were in agreement, and showed significant differences among the cytotoxic properties of surfactants in a concentration-dependent manner. Polysorbates 20, 60, 80 are the most toxic compounds. In the case of Labrasol, the degree of esterification and lack of sorbit component decreased cytotoxicity. If the hydrophyl head was changed from polyethylene glycol to propylene glycol the main determined factor of cytotoxicity was the monoester content and the length of carbon chain. In our CMC experiments, we found that only Labrasol showed expressed cytotoxicity above the CMC. It refers to good ability of micelle solubilization of Labrasol. In our paracellular transport experiments each of polyethylene glycol surfactants (Polysorbates and Labrasol) altered TEER values, but propylene glycol esters did not modify the monolayer integrity. Polyethylene glycol esters alone and in blends (0.05% Labrasol--0.001% Polysorbates 20, 60, 80) were able to increase Lucifer yellow permeability significantly below the IC₅₀ concentration. On the other hand Labrasol and Polysorbates 20 have expressed effect on tight junctions of Caco-2 monolayer. It could be concluded that polyethylene glycol ester-type tensides were able to enhance the paracellular permeability by the redistribution of junctional proteins. Our results might ensure useful data for selection of suitable tensides, co-tensides and tenside mixtures for SMEDDS formulations.
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Affiliation(s)
- Zoltán Ujhelyi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Medical and Health Science Center, University of Debrecen, Hungary
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25
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Cakir-Kiefer C, Miclo L, Balandras F, Dary A, Soligot C, Le Roux Y. Transport across Caco-2 cell monolayer and sensitivity to hydrolysis of two anxiolytic peptides from αs1-casein, α-casozepine, and αs1-casein-f91-97: effect of bile salts. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:11956-11965. [PMID: 21981611 DOI: 10.1021/jf202890e] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
α-Casozepine and f91-97, peptides from α(s1)-casein, display anxiolytic activity in rats and may have to cross the intestinal epithelium to exert this central effect. We evaluated their resistance to hydrolysis by the peptidases of Caco-2 cells and their ability to cross the cell monolayer. To mimic physiological conditions, two preparations of bile salts were used in noncytotoxic concentrations: porcine bile extract and an equimolar mixture of taurocholate, cholate, and deoxycholate. The presence and composition of bile salts appeared to modulate the peptidase activities of the Caco-2 cells involved (i) in the hydrolysis of α-casozepine, leading to much higher formation of fragments f91-99, f91-98, and f91-97, and (ii) in the hydrolysis of f91-97, leading to lower degradation of this peptide. Transport of α-casozepine across Caco-2 monolayer increased significantly, in the presence of bile extract, and of fragment f91-97, in the presence of bile salts.
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Affiliation(s)
- Céline Cakir-Kiefer
- Unité de Recherche, Animal & Fonctionnalités des Produits Animaux (UR AFPA)-Équipe, Protéolyse & Biofonctionnalités des Protéines et des Peptides, Nancy-Université, Vandœuvre-lès-Nancy, France
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26
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Yang L, Fawcett JP, Østergaard J, Zhang H, Tucker IG. Mechanistic Studies of the Effect of Bile Salts on Rhodamine 123 Uptake into RBE4 Cells. Mol Pharm 2011; 9:29-36. [DOI: 10.1021/mp200201y] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lin Yang
- School of Pharmacy, University of Otago, Dunedin, New Zealand
| | - J. Paul Fawcett
- School of Pharmacy, University of Otago, Dunedin, New Zealand
| | - Jesper Østergaard
- Department of Pharmaceutics and Analytical
Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen,
Denmark
| | - Hu Zhang
- School of Pharmacy, University of Otago, Dunedin, New Zealand
| | - Ian G. Tucker
- School of Pharmacy, University of Otago, Dunedin, New Zealand
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27
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Tung NT, Park CW, Oh TO, Kim JY, Ha JM, Rhee YS, Park ES. Formulation of solid dispersion of rebamipide evaluated in a rat model for improved bioavailability and efficacy. J Pharm Pharmacol 2011; 63:1539-47. [DOI: 10.1111/j.2042-7158.2011.01360.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Abstract
Objectives
Rebamipide, a novel anti-ulcer agent, is listed in biopharmaceutics classification class IV because of its low aqueous solubility and permeability. Consequently, the bioavailability of rebamipide is under 10% in humans. The aim of this study was to increase the solubility and determine the effect of solubility enhancement on the bioavailability and efficacy of rebamipide (RBM).
Methods
After taking into account the physiochemical properties of RBM (solubility, melting point, dosage etc.), solid dispersion was chosen as the solubility enhancement method. A rebamipide solid dispersion system containing the drug, l-lysine, PVP-VA 64 and poloxamer 407 was obtained from a spray-drying method. Solubility enhancement of RBM from the solid dispersion was determined by a dissolution test in 900 ml at pH 1.2. The bioavailability and efficacy of RBM solid dispersion were evaluated in a rat model.
Key findings
The aqueous solubility of RBM was improved 62.17 times by solid dispersion. The oral bioavailability of the drug was also increased 1.74-fold from solid dispersion compared with the reference product in a rat model. With regard to the anti-ulcer effect, the percentage inhibition of the solid dispersion was 2.71 times higher than that of the reference product in the ulcer-induced rat model.
Conclusions
A solid dispersion of rebamipide was successfully formulated using the spray-drying method. Bioavailability and efficacy of rebamipide were increased significantly by solubility enhancement of the drug.
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Affiliation(s)
- Nguyen-Thach Tung
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Chun-Woong Park
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Tack-oon Oh
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Ju-Young Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Jung-Myung Ha
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Yun-Seok Rhee
- College of Pharmacy, Gyeongsang National University, Jinju, Republic of Korea
| | - Eun-Seok Park
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
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28
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KIMURA T. Analysis of Factors Governing Drug Absorption and Their Improvement. YAKUGAKU ZASSHI 2009; 129:911-23. [DOI: 10.1248/yakushi.129.911] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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